Fujitsu RX200 S2 Benutzerhandbuch

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Chapter 9  Operation and Maintenance

■ Notes on Operating Backups 

Notes on operating backups are as follows.

For details, refer to the device manuals.

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Head Cleaning

Airborne dust and dust from the magnetic media can collect on the head of the magnetic tape device. To 

remove this dust, head cleaning must be implemented. Implement head cleaning when the device 

displays a cleaning request. Particularly DDS devices require periodic head cleaning, otherwise dust can 

cling to the magnetic head, creating a situation that cannot be cleaned with standard head cleaning 

methods, and eventually render the device useless. 

Also note that the cleaning media has a limit to how many times it can be used. Manage its lifespan.

Using cleaning media that exceeded its lifespan will have no cleaning effect. Note these points 

especially when performing automatic backups with library devices.

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Managing Media Lifespans

Media is a consumable product that must be replaced regularly.

Continued use of media exceeding its lifespan can have negative effects on the device (e.g. increase the 

speed of dust accumulation). 

The lifespan of media varies depending on the environment and operation condition of the device, the 

type of backup software used, and other operation conditions, however, it is recommended that they be 

replaced sooner than later.

To manage the lifespan, write the use start date on the media. 

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Rotating Media

Rotate between several media for backups. When using a single media cartridge repeatedly, backup data 

can be temporarily lost in the event the backup fails. Or if the hard disk were to fail during a backup, the 

data will become unrecoverable.

●

Avoid Leaving Media in Devices

Because the magnetic recording surface of the device is exposed, media can easily affected by airborne 

dust when left inserted for a long period of time. Insert the media before using it, and remove the media 

after use, and restore it in its case.

Also note that some tape devices write management information to the tape when ejecting the media. If 

the power were to go out when the media is still in the device, this writing process will not be performed 

and the media may become corrupted. 

To avoid this, remove the media from the device when turning off the server/device.

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Verifying Data after a Backup

Some backup software products provide data verification functions after a backup is completed. Such 

functions will read and verify the data written to the media after a backup is completed. This will 

increase the usage of the media, thus reducing the number of times it can be used for backups.

Depending on the hardware being used, some devices perform "read after write" operations on data; note 

the points of this section as necessary.